/*
 * (c) Copyright 2023 Palantir Technologies Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.palantir.atlasdb.workload.invariant;

import com.palantir.logsafe.Preconditions;
import com.palantir.logsafe.SafeArg;
import java.util.Optional;
import org.immutables.value.Value;

@Value.Immutable
public interface MismatchedValue {
    @Value.Parameter
    ValueAndMaybeTimestamp actual();

    @Value.Parameter
    ValueAndMaybeTimestamp expected();

    @Value.Check
    default void actualAndExpectedAreNotEqualToEachOther() {
        Preconditions.checkArgument(
                !actual().equals(expected()),
                "Cannot construct MismatchedValues for two values which are equal.",
                SafeArg.of("actual", actual()),
                SafeArg.of("expected", expected()));
    }

    static MismatchedValue of(Optional<Integer> actual, Optional<Integer> expected) {
        return MismatchedValue.of(ValueAndMaybeTimestamp.of(actual), ValueAndMaybeTimestamp.of(expected));
    }

    static MismatchedValue of(ValueAndMaybeTimestamp actual, ValueAndMaybeTimestamp expected) {
        return ImmutableMismatchedValue.of(actual, expected);
    }
}
